(M743) But before he proceeded to the complete conquest of the Persian empire, Alexander, like a prudent and far-reaching general, impetuous as he was, concluded to subdue first all the provinces which lay on the coast, and thus make the Persian fleet useless, and ultimately capture it, and leave his rear without an enemy. Accordingly he sent Parmenio to capture Damascus, where were collected immense treasures. It was surrendered without resistance though it was capable of sustaining a siege. There were captured vast treasures, with prodigious numbers of Persians of high rank, and many illustrious Greek exiles. Master of Damascus, Alexander, in the winter of B.C. 331, advanced upon Phœnicia, the cities of which mostly sent letters of submission. While at Maranthus, Darius wrote to Alexander, asking for the restitution of his wife, mother, sister, and daughter, and tendering friendship, to which Alexander replied in a haughty letter, demanding to be addressed, not as an equal, but as lord of Asia. (M744) The last hope of Darius was in the Phœnicians, who furnished him ships; and one city remained firm in its allegiance—Tyre—the strongest and most important place in Phœnicia. But even this city would have yielded on fair and honorable conditions. This did not accord with Alexander’s views, who made exorbitant demands, which could not be accepted by the Tyrians without hazarding their all. Accordingly they prepared for a siege, trusting to the impregnable defenses of the city. It was situated on an islet, half a mile from the main land, surrounded by lofty walls and towers of immense strength and thickness. But nothing discouraged Alexander, who loved to surmount difficulties. He constructed a mole from the main land to the islet, two hundred feet wide, of stone and timber, which was destroyed by a storm and by the efforts of the Tyrians. Nothing daunted, he built another, still wider and stronger, and repaired to Sidon, where he collected a great fleet, with which he invested the city by sea, as well as land. The doom of the city was now sealed, and the Tyrians could offer no more serious obstructions. The engines were then rolled along the mole to the walls, and a breach was at last made, and the city was taken by assault. The citizens then barricaded the streets, and fought desperately until they were slain. The surviving soldiers were hanged, and the women and children sold as slaves. Still the city resisted for seven months, and its capture was really the greatest effort of genius that Alexander had shown, and furnished an example to Richelieu in the siege of La Rochelle.